Sam has a mass of 116kg, he attempts to see how high he can jump by performing a standing high jump. At the instant of takeoff (when he is no longer in contact with the ground) his vertical velocity is 3.7m/s and his center of gravity is 1.1 m high. a) what is Sam's vertical acceleration at the instant of takeoff? b) how much time elapses after takeoff until Sam reaches his highest peak? c) what peak height does Sam center of gravity achieve?

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A: initial velocity (u) = 25 m/s launching angle = 30otime taken (t) = 13 seconds

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Q: 2. An object is initially suspended at the height yo = 200 m above the surface of the Earth and at…

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Newton’s Third Law of Motion

The horse pulls the cart and the cart pulls the horse in response as per Newton third law. So the big question is, “Don’t the two forces cancel each other? How does the cart accelerate?”